- 值0.001μF(1 nF)至1000μF
- 稳定性可达±0.01%/年
- 两到五个终端配置,具体取决于型号
- 校准认可包括ISO-17025
- 包括3年保修
GenRad 1409标准电容器是一系列高度稳定,经济高效的电容标准。低温度系数,低损耗,这些标准电容器具有1 nF - 1,000μF的宽范围电容值。标准电容器高达1μF,由固定云母电容器构成,具有极高的稳定性,可用作实验室中的两端或三端参考或工作标准。从1μF到10μF,这些单元由密封聚苯乙烯制成,温度为10μF。高于10μF,电容器是密封的聚碳酸酯,
几十年来观察到的典型电容器在测量电容中显示出小于+ 0.01%的随机波动,没有系统漂移的迹象。
电容器由 ≤1μF镀银云母和箔 制成 ,弹簧固定在重金属阵营中,以保持机械稳定性。选择的单元具有低损耗因数,并通过热循环稳定。它们采用铸铝外壳和硅胶连接,可提供连续干燥。这些箱子用高温蜡密封。在壳体的壁上设有一个孔,用于插入表盘式温度计。机箱顶部设有三个顶部接线柱,底部有可拆卸香蕉插头,方便并联连接,无错误
在壳体的壁上设置有用于插入刻度盘式温度计的井。为了方便并行连接而没有错误,顶壳上有三个顶升式接线柱,底部有可拆卸插头。
Calibration: A certificate of calibration that is accredited by A2LA to ISO-17025 is provided with each unit,
Calibration and Test Conditions: Calibrated at 23°C, <50% RH, Traceable to SI 1 nF - 1 μF: Units are calibrated as both 2-terminal and as 3-terminal capacitors. For 2-terminal measurements, the LO terminal is shorted to the GND terminal. The Adjustments to Nominal specified in the table above apply to 2-terminal measurements. 10 μF - 1000 μF: Units are calibrated as 5-terminal capacitors, "series model"
Nominal value | Model | Adjustment to nominal | Temperature coefficient(ppm/°C) | Calibration frequency | Dissipation(typical) | Stability (per year) | Terminals | Capacitor type |
1 nF | 1409-F | ±0.02% | 20 | 1 kHz | 0.0003 | ±100 ppm | 2 bp's + gnd | Silvered Mica mechanically stabilized hermetically sealed |
10 nF | 1409-L | ±0.02% | 20 | 1 kHz | 0.0003 | ±100 ppm | ||
100 nF | 1409-T | ±0.02% | 20 | 1 kHz | 0.0003 | ±100 ppm | ||
1 µF | 1409-Y | ±0.02% | 20 | 1 kHz | 0.0002 | ±100 ppm | ||
10 µF | 1409-10µF | ±0.04% | ±50 | 100 Hz | 0.0005 | ±200 ppm | 4 bp's + gnd | Metallized Polypropylene Sulfide (MPPS) hermetically sealed |
100 µF | 1409-100µF | ±0.05% | ±50 | 100 Hz | 0.001 | ±500 ppm | ||
1,000 µF | 1409-1000µF | ±0.4% | -150 | 100 Hz | 0.001 | ±500 ppm |